bindings --> api; and moved nlsat/sat/subpaving tactics

src/api/dotnet/Pattern.cs

@@ -0,0 +1,75 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    Pattern.cs
+
+Abstract:
+
+    Z3 Managed API: Patterns
+
+Author:
+
+    Christoph Wintersteiger (cwinter) 2012-03-16
+
+Notes:
+    
+--*/
+
+using System;
+using System.Runtime.InteropServices;
+using System.Diagnostics.Contracts;
+
+namespace Microsoft.Z3
+{
+    /// <summary>
+    /// Patterns comprise a list of terms. The list should be
+    /// non-empty.  If the list comprises of more than one term, it is
+    /// also called a multi-pattern.
+    /// </summary>
+    [ContractVerification(true)]
+    public class Pattern : AST
+    {
+        /// <summary>
+        /// The number of terms in the pattern.
+        /// </summary>
+        public uint NumTerms
+        {
+            get { return Native.Z3_get_pattern_num_terms(Context.nCtx, NativeObject); }
+        }
+
+        /// <summary>
+        /// The terms in the pattern.
+        /// </summary>
+        public Expr[] Terms
+        {
+            get
+            {
+                Contract.Ensures(Contract.Result<Expr[]>() != null);
+
+                uint n = NumTerms;
+                Expr[] res = new Expr[n];
+                for (uint i = 0; i < n; i++)
+                    res[i] = Expr.Create(Context, Native.Z3_get_pattern(Context.nCtx, NativeObject, i));
+                return res;
+            }
+        }
+
+        /// <summary>
+        /// A string representation of the pattern.
+        /// </summary>
+        public override string ToString()
+        {
+            return Native.Z3_pattern_to_string(Context.nCtx, NativeObject);
+        }
+
+        #region Internal
+        internal Pattern(Context ctx, IntPtr obj)
+            : base(ctx, obj)
+        {
+            Contract.Requires(ctx != null);
+        }
+        #endregion
+    }
+}